Grinding-wheel center.



No. 662,240. Patented Nov. 20, I900.

J. MAGPHAIL.

GRINDING WHEEL CENTER.

(Application filed Mar. 11, 1899.)

(No Model.)

Unrrnn ATENT FFIQ.

ILLINOIS, ASSIGNOR TO THE PLANO MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

GRINDING-WHEEL CENTER.

SPECIFICATION forming part of Letters Patent No. 662,240, dated November 20, 1900.

Application filed. M 9- To all whom it 777/fbZ/ concern;

Be it known that 1, JAMES MACPHAIL, a resident of Blue Island, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Grinding- Wheel Centers, of which the following is a specification.

The object of my invention is to provide a novel, simple, and efficient grinding-wheel center comprising means for removably securing the grinding-wheel to its shaft or arbor or to a sleeve to be removably attached to a driving-shaft.

Myinvention pertains to the many kinds and sizes of grinding-Wheelssuch as emerywheels, common grindstones, and the like and has useful application to those grindingmachines Where it is necessary or desirable to quickly remove a grinding-wheel and substitute another on the same driving-shaft.

In the accompanying drawings, Figure 1 is a front elevation of a grinding-wheel with my center or attachment applied; Fig. 2, a section on line 2 of Fig. 1; Fig. 3, a section on line 3 of Fig. 2, and Fig. 4 aview of the sleeve with the wheel removed.

The grinding-wheel 1 may be any of the ordinary grinding-wheels. It is designed to be attached to a rotatable sleeve, which may be in turn removably attached to adriving-shaft in the following novel manner: The member or sleeve 2 is a hollow cylinder having at its central part a portion 3 of increased diameter and provided with longitudinal grooves 4 and grooves 4 at rightangles to the longitudinal grooves. These latter grooves are preferably dodged, as shown. The sleeve is also provided with one or more sets of pin-holes 5. When the wheel is designed to be removable, together with immediate fastening devices or center, it is made hollow, as shown; but if not the sleeve may become the arbor ordriving-shaft itself and may then be made solid.

The driving-shaft 6 is adapted to be driven in any suitable and well-known manner and is provided with one or more pin-holes 7, depending on the number formed in the sleeve. Cotter-pins 8 or other suitable devices enter the holes 5 and 7 and secure the shaft and sleeve together. h

The wheel has a central opening to tit snugly Serial No. 708,741. (No model.)

on the portion 3, and when in proper position suitable material is either poured or forced in the grooves 4t and 4 thereby securely fastening the wheel to the sleeve and preventing lateral movement thereon. An efficient method is by leading.

When it is desired to remove the wheel and its center or attachment, so as to substitute another wheel, the cotters are removed and either the shaft or wheel moved laterally and the other wheel can then be readily attached in the same manner.

Although I have described more or less precise forms and details of construction, I do not intend to be understood as limiting myself thereto, as I contem plate changes in form, the proportion of parts, and the substitution of equivalents, as circumstances maysuggest or render expedient,and without departing from the spirit of my invention.

I claim 1. In a grinding-wheel holder comprising a sleeve having an enlarged portion on which the grinding-wheel is rigidly and permanently fixed, a driving-shaft inside the sleeve, and means for detachably securing the sleeve to the shaft.

2. A grinding-wheel holder comprising a sleeve having pin-holes near its ends and also having an enlarged portion provided with longitudinal grooves to be filled with a material to permanently secure the grinding- Wheel on such sleeve, a driving-shaft having pin-holes registering with the pin-holes in the sleeve and removable pins entering both sets of holes.

8. A grinding-wheel center or holder comprising a sleeve having a pin-hole, a'grinding-wheel received on the sleeve, means for fastening the wheel on the sleeve, a drivingshaft having a pin-hole and a pin entering both said pin-holes.

4. A grinding-Wheel holder comprising a member having an enlarged portion provided with longitudinal grooves, a grinding-wheel received on said portion and a material forced into said grooves and within the wheel.

5. A grinding-wheel holder comprising a member having an enlarged portion 3 provided with grooves 4 and a grinding-wheel 1 received on said member.

6. A grinding-wheel holder comprising a sleeve 2 having a pin-hole 5 and also having an enlarged portion 3 providedwith longitndin al grooves 4, a grinding-wheel 1 received on the enlarged portion of the sleeve and secured thereto by material forced into the grooves and within the wheel, a driving=shaft 6 having a pin-hole 7 and a cotter-pin 8 entering holes 5 and 7 to secure the sleeve to the shaft. j

7. A grinding-wheel center comprising a member provided With longitudinal and cross grooves, a grinding-wheel and filling material in said grooves for securing the wheel on said member.

with longitudinal grooves and also with dodgedcross-grooves between said longitudinal grooves and a grinding-wheel received on saidmember.

JAMES MACPHAIL.

Witnesses:

SAMUEL E. HIBBEN, LOUISE E. SERAGE. 

